Improvement in condettsing-cardim machines



@einstein @einer @fitte JOHN C. SHAW, OF MANAYUNK', PENNSYLVANIA.

. Letters Patent No. 73,760datecl Jam/tary 28, 1868.

IMPROVEMENT IN GONDENSING-ARDING MACHINES.

aille Stlgshult instemt tu im tiges: sttets ttsut mit mating mi ufttestmt. y

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN C. SHAW, of Maneyunk, county of Philadelphia.,and State of Pennsylvania, have invented u certain new andusefulhImpr-ovement in Rubber-Motions for Gondensing-Garding Engines;and I do hereby declare that the following is a full, clear, and exactdescription of the construction and operation ofthe same, referencebeing mede to the annexed drawings, which make :t part of thisspecification, in which- Figure l is :L side view.

Figure 2 is :in end view.

Figure 3 is e view of the steel plate.

Figure 4 is c view ofthe top plete v Similar letters in the drawingsrepresent the same parts.

The nature of my invention consists in the combination and arrangementof al steel plete and set-screw, for the purpose of taking up the loosemotion in the rubber-motion, of a condensing-ending engine.

To enable others skilled in the arts to make and operate my improvement,I will describe the construction.

and operation ofthe same.

A represents one of the rubbing-roller stnndsynhioh is constructed inthe usual manner, with the exception ofthe pui-t marked a, which isconstructed es shown in thevdrawings. C is :i section of one oftherubbingroller shafts. D represents u. collar on the end of theroller-shaft C. The part of the stand marked a has :i hole drilledthrough it, and into this hole is screwed the set-screw E. Thecast-steel plate B is fitted to the part a, und of such a. height thatthe end of the plate B will strike the centre ofthe coller on the shaftC. The plate B has n slot,f, in it to admit adjusting.v The stand A isfastened to the frame of' the rubber-motion by u bolt through the slotg. 'v

The operation is as follows: The rubber-motion receives a rapidreciprocating motion, and it is necessary toy keep the collar Dclosc upto the stond A, to prevent jarring und noise. 'lhe plate B is moved `upuntil it touches the collar I). It is then made fast by the set-screw E,but not so tight as to prevent the roller from revolving. As the-collarD and the end of' the plate weer exray. the slot in the plate permits itto be adjusted, and prevents any noise or jarring.

This improvement has several advantages over theold plan ofthepointedset-serew and .jam-nut. ln case the roller lapsfvthe pointedset-screw will prevent the roller from rising, and will cause theroller-shaft to bend, or is liable to tear oft the covering from theroller. There is another difficulty. It is neoessary'to take outtherubbingroller to grind the dofers, and with the pointed set-screw andjam-nutit is necessary to screw out the set-screw in order to get therollers out. With my improvement it is not necessary to move the pleteB, and the rollers can be lifted in and out; and in ense of o. lopforming on the rollers freely they are free to rise, und prevent anyinjury.to them.

Claim.

In combination with the collar D of the roll C and bracket A, I claimthe slotted plate B and set-screw E, substantially as and for thepurpose set forth.

JOHN C. SHAW.

Witnesses:

A. I. DoUGLAss, JOHN SHINN;

